2-(4-bromo-3-fluoro-benzoyl)-3-[(E)-methylimino]-butyric acid methyl ester 、
盐酸羟胺 以to provide 5-(4-bromo-3-fluoro-phenyl)-3-methyl-isoxazole-4-carboxylic acid methyl ester, which的产率得到5-(4-bromo-3-fluoro-phenyl)-3-methyl-isoxazole-4-carboxylic acid methyl ester